D looses ground in Tiobe but moves up to #13

Manfred Nowak svv1999 at hotmail.com
Tue Aug 7 03:39:16 PDT 2007


Jarrett Billingsley wrote

> Maybe everything ahead of it lost even _more_ ground ;) 

Not confirmed!

If the time horizon of 12 month and monthly measuring, as shown by 
tiobe, is adequate, then the following holds:

For none of the top ten languages, except Perl, the hypothesis can be 
falsified, that the measured values conform to a normal distribution. 

Perl had a high plateau for 8 month, but lowered to the former niveau.


Notes:
1) The top ten languages hold roughly 80% of the "activity" shown by 
tiobe. Seems that the 80:20-rule holds.
2) The least in the top ten, ruby, holds roughly 3% of the "activity". 
Seems that the "no worth under 3% market share"-rule holds too.

I.e. all "activities" below 3% share might be equivalent to brownian 
movement which might mask itself as an uprise:

http://en.wikipedia.org/wiki/Image:Brownian_hierarchical.png


-manfred 




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